Extension car-step.



W. G. WALTON.

EXTENSION GAR STEP.

APPLICATION FILED SBPT.13, 19 11.

Patented Jan.9,1912.

WITNESSES WILLIAM ('JERAI'I'AlVIIv WALTON, 0F FERR-IDAY, LOUISIANA.

EXTENSION cnn-s'rnr.

Specification of Letters Patent.

Patented. Jan. 9,1912.

Application filed September 13, 1911. Serial No. 649,037.

To all whom it may concern:

Be it known that I, WILLIAM G. WALTON, a citizen of the United States,'anda resident of Ferriday, in the parish of Concordia and State of Louisiana, have invented a new and Improved Extension Gar- Step, of which the following is a full, clear, and exact description.

My invention relates to car steps and it. has for its object to provide extension steps which are normallyraised a distance from the ground and are disposed'on stationary steps, the extension steps being lowered automatically by an opening of a gate on the carplatform, the mechanism provided for so lowering the extension steps also serving to raise the extension steps automatically when the gate is moved into closed position.

Additional objects of the invention will appear in the following complete specification, in which the preferred form of the invention is disclosed.

In the drawings similar characters of reference indicate corresponding parts in all the views, in which- Figure 1 is'a perspective view of a car platform provided with my extension steps; Fig. 2 is an end view of a car platform showing 'my extension steps; Fig. 3 is a view similar to that shown in'Fig. 2 in section; and Fig. 4 is a view of Fig. 3 looking from the right.

By referring to the drawings it will be seen that extending downwardly from the car platform 5 there are side rails '6, these side rails 6 being spaced apart and being connected by treads 7 and risers 8 which are secured to the side rails. The extension steps have side rails 9 which are connected by treads 10, and risers 11. As will be understood by referring to the drawings the side rails 9 of the extension steps are disposed at the inner sides of the side rails 6 of the stationary steps. Journaled inbear ings in the side rails 6 there are studs 12, pinions 13'being secured to these studs 12 at the outer sides of the side rails 6, the links 14 being secured to these pinions 13 at the inner sides of the side rails. 6. The pinions 13 are engaged by gear members 15 which are secured to a rock shaft 16 journaled in the side rails 6. Secured to this rock shaft 16 there is a bevel gear 17 this bevel gear 17 being engaged by a bevel gear 18 secured to a standard 19 journaled in bearings 20 in the car platform 5, the gate 22 being secured to and moves with-the standard 19 so that when the gate 22 is opened or closed the standard 19 will be rotated, carrying with it the bevel gear 18 which by means of the bevel gear 17 will rock the shaft 16. The lower ter minals of the links 14 are articulated to ,the'upper ends of the rails 9'of the exten-' sion steps.

Articulated at the lower ends of the side rails 6 there are additionallinks 23 these links being also articulated to the side rails 9 of the extensionsteps.

To assist in supporting the extension steps chains 24 are provided, these chains being secured to brackets 25 which are in turn secured to the side rails 9 at their lower ends, the upper terminals of the chains 24 being secured to the car.

As the studs 12 are rocked by the mechanism described when the gate '22 is opened or closed, the studs 12 operate the links 14 which are secured thereto, the outer torminals of the said links 14 describing an arc and carrying with them the upper portion of the extension steps. portion of the extension steps is moved upwardly and inwardly clear of the stationary steps the lower portion of the extension steps is also held'clear of the stationary steps by means of the links 23 until the extension steps are disposed as'shown in Fig. 3 of the drawings, when the treads of the extension steps rest on the treads of the stationary steps with the extension steps raised a distance from the ground and out of operative position.

Having thus described my invention I claim as new, and desire to secure by Letters Patent: Y I

1. In an extension car step astationary step and an extension step, movable relatively to the stationary step, two pairs of links pivoted to the extension step and to the stationary step, one pair of links being spaced from the other pair so that the extension may be raised and loweredclear of the stationary step by one of the links, and means to operate the last-mentioned link.

2. In combination with a car a pair of links pivoted to the car, a second pair of links pivoted to the car on an axis disposed below the horizontal plane of the axis of the first links, and extending out beyond the vertical plane of the axis of the first links, and an extensible car step pivoted to the As the upper g links, which permits the raising and the lowering of the car step as the car step is moved inwardly.

3.,In an extension car step a stationary step, an extension step movable relatively to the stationary step, a pair of links one at each side ofthe stationary step connecting the extension step with the stationary. step, a second pair of links one at each side of the stationary step and below the first-mentioned links for connecting the extension step with the stationary step, the links be ing adapted to raise the extension step and swing it upward and inward.

4. In an extension car step a stationary step, an extension step movable relatively to the stationary step, a pair of links one at each side of the stationarystep connecting the extension step with the stationary step, a second pair of links one at each side of the stationary step .and below the first-mentioned links for connecting the extension step with the stationary step, the links being adapted to raise the extension step and swing it upward and. inward, a gate, and means connecting the gate with one of'the links for operating the latter. I I

5. In an extension car step a stationary step, an extension step movable relatively to the stationary step, links connecting the extension step with the stationary step for holding the extension step clear of the stationary step when the extension step is raised, means for operating one of the links to move the extension step relatively to the stationary step, a gate, and means connecting the gate with one of the links for operating the latter. V

6. In an extension car step a stationary step, an extension step'movable relatively to the stationary step, links connecting the extension step with the stationary step for holding the extension step clear of the stationary step when the extension step is raised, and means for operating one of the links to move the extension step relatively to the stationary step, a rock shaft having teeth, and teeth meshing with the first-mentioned teeth and movablewith one of the links for operating the extension step by means of the rock shaft. i

7. In an extension car step a stationary tioned links for connecting the-extension step with the stationary step, the links being adapted to raise the extension step and swing it upward and inward, teeth movable with one pair of links, and

teeth by which the last-mentioned links are operable by the rock shaft.

8. In an extension car step a stationary step, an extension step movable relatively to the stationary step, a pair of links one at each side of the stationary step connecting the extension step with the stationary step,

a second pair of links one at each side of a rock shaft having teeth meshing with the first-mentioned the stationary step and below thefirst-inem tioned links for connecting the extension step with the stationary step, the links being adapted to raise the extension step and swing it upward and. inward, a gate having a gear member secured thereto, a rock shaft having a gear member meshing with the first-mentioned gear member, teeth on the rock shaft, and teeth on one of the links meshing with the rock shaft.

9. In combination with a car an extension step movable relatively to the car, a pair of links spaced apart and connecting the ex tension step with the car, a second pair of links spaced apart, with the terminals at the car disposed below the horizontal plane of the terminals of the first-mentioned links'at' the car for connectin'g the extension step with the car, the links being adapjted to ra1se the extensionstep and swing itupward and inward, a gate, and means connecting the gate with one of the links for operatingthe latter. 1

In testimony whereof I have signed my name to this specification in the two subscribing witnesses.

WILLIAM GRAHAM WALTON.

Witnesses:

JOHN E. CLAYTON, 4 Y J. ELLIOTT CLAYTON, Jr.

the last-mentioned teeth on presence of 1 Copies of this patent may be obtained for five cents each, by addressing the commissioner of iatents,

v Washington, D. G. a M 

